/* Theme Toggle */
.theme-toggle-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    transition: all 0.3s ease;
}

.theme-toggle-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--card-bg);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: all 0.3s ease;
}

.theme-toggle-btn.hidden {
    transform: scale(0);
    opacity: 0;
    visibility: hidden;
}

/* Scroll Top */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--card-bg);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: all 0.3s ease;
    z-index: 999;
    font-size: 24px;
    color: var(--text-color);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.theme-toggle-container.hidden {
    transform: translateY(-100px);
    opacity: 0;
    visibility: hidden;
}